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2010

Fault diagnosis in railway track circuits using Dempster-Shafer classifier fusion

8 years 11 months ago
Fault diagnosis in railway track circuits using Dempster-Shafer classifier fusion
This paper addresses the problem of fault detection and isolation in railway track circuits. A track circuit can be considered as a large-scale system composed of a series of trimming capacitors located between a transmitter and a receiver. A defective capacitor affects not only its own inspection data (short circuit current) but also the measurements related to all capacitors located downstream (between the defective capacitor and the receiver). Here, the global fault detection and isolation problem is broken down into several local pattern recognition problems, each dedicated to one capacitor. The outputs from local neural network or decision tree classifiers are expressed using Dempster-Shafer theory and combined to make a final decision on the detection and localization of a fault in the system. Experiments with simulated data show that correct detection rates over 99 % and correct localization rates over 92% can be achieved using this approach, which represents a major improvemen...
Latifa Oukhellou, Alexandra Debiolles, Thierry Den
Added 10 Dec 2010
Updated 10 Dec 2010
Type Journal
Year 2010
Where EAAI
Authors Latifa Oukhellou, Alexandra Debiolles, Thierry Denoeux, Patrice Aknin
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